Hot-air circulator for heating stoves



Feb. 24. 1925. 1,527,732

H. F. GROSS' HoT ma muuux Foa HEATING sTovzs vFiled July 2. 1922 ff l\ wf f Witness: @M @auf Ina/m,

Patented Feb. 24, 1925.

UNITED STATES PATENT GFFE.Y

HENRY F. GEOSS, OF BUNKER HILL, KANSAS, ASSIGNOR 0F ONE-FOURTH To A. L.

KENNEGGTT, OF BNKER HILL, KANSAS.

I-IOTAIR GIRCULATGR'FGR HEATING STOVIES.

Application led .Iuly 2, 1924.

To @ZZ whom t may concern:

Be it known that I, HENRY F. Gnoss, a citizen of the United States, residing at Bunker Hill, in the county of Russell and lt-tate of Kansas, have invented certain new and useful Improvements in Hot-Air Circulators for Heating Stoves, of which the following is a specification.

My invention relates to hot air circulators for stoves and furnaces and my object is to provide a simple and inexpensive apparatus of this character which can be readily installed in stoves and furnaces for the purpose of obtaining and circulating a` maximum volume of heated air at a minimum eX- penditure of fuel.

In order that the invention may be fully understood, reference will now be had to the accompanying drawing, in which:

Fig. 1 is a vertical sectional View of a hea-ting stove equipped with the air circulator.

Fig. 2 is a detail plan view of the hot air circulator.

Fig. 3 is a detail perspective view of a partition constituting a. portion of theV invention.

Figs. 4, 5 and 6 are plan views of modified forms of a drum constituting a portion of the invention.

Similar reference characters designate like parts throughout the drawing.

A, designates a heatingstove of any ordinary or preferred type, the top B of which has a centrally7 disposed opening C formed therein to admit the hot air circulator, which embodies a drum 2, an internal tube 4 and a partition 6.

The drum 2 has a closed bottom portion 8 and is provided at its upper open end with a marginal flange 10 which overlaps the top B of the stove A for the purpose of supporting the drum which depends into the stove A throughout the opening C.

The tube 4 is held centrally within the drum 2 by equally spaced vertical fins 12 which are, preferably, formed integral with the interior surface of said drum 2. The drum 2 is provided at its lower po-rtion with a removable collar 11, held in place by wire segments 13. Said collar 1l may be arranged concentrically or eccentrically upon `the drum 2, it depending on how said drum is arranged within the stove. In some instances where the stove pipe, not shown,

semi no. 723,711.

connects with one side of the top B, it may be necessary to arrange the drum 2` eccen- .tricaliy within the stove A, in which event which the tube 4 rests and is spaced abovel the bottoni 8 of the drum 2, so that the heated air passing downwardly between the drum 2 and said tube 4 may enter the lower end of the latter.

rEhe tube 4 is surmounted by a. radiator 18, preferably, provided at its upper end with a grating 2O through which the heated air may escape. y

The fins 12 divide .the space between the drum 2 and the tube 4 into descending air channels 22 which communicate at their lower ends with ascending air channels 24 formed within the tube 4 by the wings 14.

In practice the heat from the tire in the tire-pot D, in ascending to escape through the usual flue, not shown, impinges against the bottoni 8 and the exterior surfaces of the drum 2, thereby heating the relatively large volume of air in the tube 4 and causing it to flow upwardly through the channels 24. rihe upward iiow of air through the' tube 4 creates a suction which draws the outer air downwardly through the channels 22 and thence into the channels 24 from which it escapes in a heated state into the radiator 18 and out through the grating 20. rlhe heated air escaping through the grating 2O may, in addition to heating the room containing said radiator, be utilized for heating food or other articles placed upon said grating 20. f

If preferred the. tube 4 may be made of suflicient length to extend through the floor of an upper room in which the radiator 18 may be located.

In the modified form disclosed by Fig. 4, the drum 2L is formed to iit within a stove having an elliptical body. rFhe drum 2b is for a stove having a cylindrical body and in which the stove pipeconnection is at top of the stove7 at one side. The drum 2c is more particularly for a Wood burning stove with a horizont-al body.

Froni'tlie foregoing description it Will be understood that a large volume of air may be heated and circulated by my apparatus thereby adding to the efficiency and heating capacity of the stove or furnace in which it is installed, and While I have shown the preferred and several modiied forms oiv the invention, I reserve theright to such other forms as fall Within the spirit and scope or' the invention as claimed.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is:

l. In a hot air circulator, a drumclosed at its.V lower portion and open at its'upper end, a tube disposed Within and projeeting above the upper end 0f said drum, spacing elements between the drum and the tube for holding the latter centrally Within the former,v and means dividing said tube into air channels and support-ing it above the bottom of the drum.

2. Ink a hot ain circulator5. a drurni open at its upper end and-closed` aty its lower portion, a tube spaced Within and projecting above the upper end of said drum, andv a= vholding the latter centrally Within the former, means spacing said tube above the bot'- tom of the drum so that a' column of airdescending between said drum andsaid tube may enter thelovver end of thelatter and pass upwardly therethrough, and a radiator' communicating Withk the'upper end of the tube.

In .testimony whereof I affix my signature7 in the presenceof tvvo Witnesses.

HENRY F. GROSS-` IVitnesses:

L. J FISCHER, F. C. FISCHER. 

